Malicious PDF — malware analysis report

Static analysis result for SHA-256 f48e0a6d950b9b88…

MALICIOUS

PDF

73.8 KB Created: 2021-04-22 05:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3524927970c11691b8d24982aec02255 SHA-1: 9d3de59890c5cb15b3ea14b6e98158c16ffc9eaa SHA-256: f48e0a6d950b9b88ce5be8090779607bc8e29b050dba717ec6017459bfa1d421
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with one specifically identified as an external URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to 'quotes online', likely a pretext to drive the user to the malicious URL. No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/strik?utm_term=how+to+make+perfect+quotes+online
    • http://digitalliteracyinstitute.com/1791338494658u9.pdf
    • http://domen3.club/haier_washer_dryer_combo_lint_trapsv62h.pdf
    • https://static.s123-cdn-static.com/uploads/4466662/normal_60028d210bce7.pdf
    • http://trikolor.site/30935498563wkq7i.pdf
    • https://cdn-cms.f-static.net/uploads/4486351/normal_603bb6707d8ec.pdf
    • https://cdn-cms.f-static.net/uploads/4446401/normal_601f691cdd85c.pdf
    • https://static.s123-cdn-static.com/uploads/4501659/normal_5feb239c386c7.pdf
    • https://static.s123-cdn-static.com/uploads/4458428/normal_60070b389d386.pdf
    • https://cdn.sqhk.co/zanaforare/exigjgs/12453873624.pdf
    • https://cdn-cms.f-static.net/uploads/4388619/normal_604da4ad1728e.pdf
    • http://creditreportus.info/43237878470lk10m.pdf
    • https://cdn-cms.f-static.net/uploads/4486984/normal_602fd7986f612.pdf
    • http://scarcebook.com/182334864868exn4.pdf
    • https://static.s123-cdn-static.com/uploads/4417208/normal_600860ad60d34.pdf
    • http://tipografiyav.moscow/gogo_ultra_x_scooter_partsa3euv.pdf
    • https://cdn.sqhk.co/pijujuweg/hguFBwR/crash_dive_game_manual.pdf
    • http://job-finder.space/gadanidesoduzozagel8blss.pdf
    • https://cdn.sqhk.co/nopawuwam/hdhegf8/the_walking_dead_game_2020_overkill.pdf
    • https://static.s123-cdn-static.com/uploads/4376866/normal_5fc69d8d1a1e5.pdf
    • http://fortuneo.biz/956104720829uatf.pdf
    • https://cdn-cms.f-static.net/uploads/4366063/normal_601bb2a77bcfe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3b0.bin
858b9a0f743e32149daac3cec19ba59ddc290bad86be6e8488f7ace45d64d33a
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B0 5404 bytes
font_01_sfnt_off0000f610.bin
bec5d8d2b3c9057df8f424d768e5d5b1ec18c94855c320da714ef3c19bc61c7e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF610 10536 bytes